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Post by jjt on Aug 27, 2017 2:41:03 GMT -5
I am making one thread to ask both of these questions.
First I plan on eventually doing a 180cc bbk but I'm wondering if there is a service manual out there for the gy6. I'm mostly interested in it for the torque specs but since this is a motor I haven't ever messed with it would be nice to have for all the info a service manual provides. I'm having a lot of fun with this little thing and I'm trying to see how much speed I can get out of it before actually messing with internals. With the new exhaust and dialing in the jetting it hit 57mph. My goal is 60 on the stock motor. This leads me to my 2nd question. How far are you guys revving your stock gy6 150? Not once but on a regular basis. I don't mind if it blows up but if I can avoid it by not doing something stupid like over revving it, I will.
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Post by jjt on Aug 27, 2017 2:01:25 GMT -5
The clutch and bell are new. I was wondering if maybe it takes some miles before they get broke in. It's supposed to be a racing clutch. I got it from parts for scooters along with a fancy looking bell. The clutches came with blue springs on them so I just left it set up like it was. It has about 75 miles on the clutch now.   |
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Post by jjt on Aug 25, 2017 21:00:41 GMT -5
I hate how this thing launches. It's like the clutch slips a lot when you take off hard. My wife's scooter is bone stock and I love how it launches. It feels like it slips briefly then has some what of a sling effect. I'm still playing with all this stuff but afraid to take the clutch nut off again until I get a replacement. I'm afraid the threads will strip out of the nut and I'm screwed
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Post by jjt on Aug 25, 2017 19:14:11 GMT -5
I have the 13g sliders in now. Was thinking about trying the 11g to see the difference
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Post by jjt on Aug 25, 2017 18:34:47 GMT -5
Did you have issues with yours not mounting right? I thought this was a decent brand. That's the main reason I went with it
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Post by jjt on Aug 25, 2017 18:32:30 GMT -5
You're welcome. I really like it
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Post by jjt on Aug 24, 2017 23:37:21 GMT -5
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Post by jjt on Aug 24, 2017 23:35:49 GMT -5
I got the exhaust put on tonight. It's a lot nicer than I thought it would be. It's also a lot lighter than I thought it would be. The sound at idle is nice. Louder than stock and deep but not loud at all. Cruise is nice. However under load it's loud which I don't care for but I can live with it
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Post by jjt on Aug 24, 2017 23:22:41 GMT -5
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Post by jjt on Aug 24, 2017 23:20:18 GMT -5
Not sure if this will work or not but here are a couple pics of the side stand   |
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Post by jjt on Aug 23, 2017 21:58:05 GMT -5
I didn't take pics of the install but I can take pics of it installed. I'll take one when I run out to the garage.
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Post by jjt on Aug 23, 2017 7:41:10 GMT -5
When I swapped my zuma 50 with a gy6 I lost my center stand due to the mount being built in to the case. I ordered the Buzzetti side stand from scooter swap shop and it is very nice. Really easy to install and it works perfect(much better than trying to find something to lean my scooter on lol). I just figured I would mention this in case anyone else was thinking about using a side stand on their zuma.
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Post by jjt on Aug 23, 2017 7:17:58 GMT -5
I'll take pics of the chart today and see if I can figure out how to post them. I was making a muffler but haven't had time to finish it but after reading your last post I ordered a new exhaust with a new head pipe. It's the ssp-g 2nd gen stainless exhaust with a round muffler. I'm hoping it's a decent exhaust. I'm guessing it will be heavy. I already have a single pod style air filter on it because when I swapped the 2stroke 50cc motor for the gy6 150cc I had to come up with something. It's a pretty crappy looking cheap set up but it works and I'll make something nicer looking this winter. I drilled the jets that are currently in the carb but I ordered a jet assortment and it came in yesterday. I'm hoping when the exhaust comes the muffler is open enough to put a sniffer in so I can get it jetted. If it's not I'll have to weld an o2 bung in it.
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Post by jjt on Aug 20, 2017 22:50:03 GMT -5
Ahh gotcha. I wasn't aware of that. I've read a lot of people revving them to 8500 and up to 9500. My brother in laws scooter is a completely stock gy6 and his is revving 8300.
In stock form I was getting 7.2hp sae corrected
With the dr pulley variator , 13g sliders and new clutch it went to 7.5hp sae corrected
It is much more pleasant to ride now. Cruising at 35 to 45 is a lot less effort on the throttle and it seems way smoother.
I want to work on the take off. I'd love to have a stronger take off from lights and stop signs.
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Post by jjt on Aug 19, 2017 9:15:52 GMT -5
True I guess I could start the dyno once it goes into high gear. If I start it low I get a quick rise on the chart then it starts dropping as it goes in to high gear.
I got the variator, clutch, bell and torque spring put on last night. I used the 13g sliders, yellow torque spring and blue clutch springs. Acceleration on the road improved but I'm having an issue with top speed because it don't want to rev much over 7000 rpm. It doesn't matter if I'm on a long straight or going down hill. I have a couple guesses on this but not sure any of them make sense.
1) I didn't get the exhaust done so would the stock muffler be so restrictive it's stopping the engine from revving any higher?
2) is it running to lean and not letting it rev out? Haven't checked it on the dyno but plug looks lean
3) are 13g sliders to heavy to let it rev? The stock weights were 14g
4) would the stock zuma cdi be limited to around 7000? It's an 02 50cc cdi
Also I thought the stock belt would be 842 since it is the long case but it has an 835. Do you think that would be to short to let the variator close all the way? There is a decent size gap between the top and where the belt is going to.
I'm not sure if I should keep testing or not. I'm afraid of taking the clutch apart again because the threads on the big nut didn't look good when I took it apart. It went back together fine and tightened up good but I don't have an extra if it strips.
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